Honestly, while I don't disagree that being a good farmer takes a lot of education, dedication, experience, and time; the average American college student is going through many tens of thousands of dollars in debt, being told that this was what they needed to do in order to compete in the educated world economy; only to get out of school and find the jobs are at worst "internships" that are unpaid, and at best are jobs that are paid like absolute garbage. For that matter, the universities also are not necessarily providing them the skills they need to actually contribute in the workforce. I often times interact with college students in my career and I find that while they are energetic and want to learn, they were woefully unprepared for even the most basic understanding. And this is an absolute problem for anyone entering a Bachelor's program. The problem is, our education system is doing this en masse, to every single student. "Get the paper! It will get you a career and you'll pay that loan right off! Your American dream will come true!"
Again, I'm not discounting the farmers. Though I do discount the farm hands who do nothing but do menial tasks in the field. Though I do agree that farm work should pay more as well and incentivize hiring locals to do the jobs.
At any rate, the problem is multi-pronged and requires a multi-pronged approach to fixing. Unfortunately that requires analyzing both education and VISA policies. And Americans love their college football culture too much to give a shit about the actual education quality received. It's pretty terrible.